I'm just wondering if there is any noticeable difference in adding an intake and afternarket exhaust on my 04 LS? Anyone mod there's and would you do it again? Or should I just make it look good and forget about any performance?

 

I don't have a 3.4L but from what I understand to get anything noticeable out of a 3.4 you'll need to spend a ton of money. I'd personally put the money into an L67 swap if I were you

 

Yeah, that's what I thought. Thanks for the advice.

 

I agree with labnjab. I don't know why people spend so much modding these 3400 when a used L67 or equivenlent donor can be had for about a $1000, maybe less.

Donor car > swap the engines > sell donor > cost = next to nothing = fast car

 

IMO it depends how far you want to go with it. I definitely think an home made FWI or CAI intake and a muffler back exhaust is well worth the money (thats also where I stopped with my 3100). Even if you gain virtually no power from it, the sound difference with those two will definitely make the car much more fun to drive- and you could do both for $250 or less depending what setups you're looking at doing.

 

That may be something to consider as well. Thanks for the suggestion.